If you're into 3D printing or CAD work, having a reliable STL viewer for Windows is essential. Luckily, there are plenty of options to choose from that offer powerful features and user-friendly interfaces. Here are some of the best STL viewers for Windows that you should definitely check out. First up, we have Autodesk Fusion 360. Not only does it offer robust STL viewing capabilities, but it also includes powerful CAD tools for designing and manipulating 3D models. Plus, it's free for non-commercial use, making it a great option for hobbyists and small businesses. Next, we have FreeCAD. As the name suggests, this open-source software is completely free to use and offers an intuitive interface for viewing and editing STL files. With its parametric modeling features, it's a great choice for users who want more control over their 3D designs. Another popular option is MeshLab. This versatile software is not only a great STL viewer, but also offers advanced mesh processing and editing tools. It's perfect for users who need to clean up and refine their 3D models before printing. Finally, we have 3D Builder, a Windows native app that provides a simple and intuitive way to view and edit STL files. While it may not have as many advanced features as some other options, its ease of use makes it a great choice for beginners. Whether you're a professional designer or a hobbyist, having a reliable STL viewer for Windows is crucial for working with 3D models. With these top picks, you can find the perfect software to meet your needs and take your 3D printing and CAD projects to the next level.